Addendum to the fix for bug #39178: Server crash in YaSSL

with non-RSA-requesting client if server uses RSA key

matchSuite() may not find a match. 
It will return error in this case.
Added a error checking code that will prevent using uninitialized 
memory in the code based on the assumption 
that matchSuite() has found a match.

extra/yassl/src/yassl_imp.cpp:
  Bug #39178: Correct error checking added

extra/yassl/src/yassl_imp.cpp

@@ -1560,6 +1560,7 @@ void ClientHello::Process(input_buffer&, SSL& ssl)
         return;
     }
     ssl.matchSuite(cipher_suites_, suite_len_);
+    if (ssl.GetError()) return;
     ssl.set_pending(ssl.getSecurity().get_parms().suite_[1]);
 
     if (compression_methods_ == zlib)